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<chem-struct-wrap> Chemical Structure Wrapper

Wrapper element for a chemical expression, reaction, equation, etc. that is set apart from the text; this element includes any number, label, or caption that accompanies the chemical expression.

Usage/Remarks

A <chem-struct-wrap> may be numbered, programmatically by a formatting application or by preserving the number inside a <label> element.
The chemical expressions inside this element may be formally tagged as <chem-struct> elements or merely expressed as one or more display objects.
Position
The @position attribute may be used to indicate whether this element must be anchored at its exact location within the text or whether it may float, for example, to the top of the next page, into the next column, to the end of a logical file, or within a separate window.
Related Elements
The expression of a chemical reaction or other chemical structure goes inside the <chem-struct> element. The element <chem-struct-wrap> is an outer wrapper that may hold, for example, both a chemical reaction and its caption or three related chemical expressions. In other words, this element does not contain a chemical expression; it contains other elements (such as <chem-struct>s) that contain such expressions.
Attributes
content-type
orientation (default = portrait)
originator
position (default = float)
specific-use

Base Attributes

id
xml:base
xml:lang
Models and Context
May be contained in
<ack>, <app>, <app-group>, <bio>, <body>, <boxed-text>, <disp-quote>, <fig>, <glossary>, <index>, <index-div>, <index-group>, <license-p>, <named-content>, <non-normative-example>, <non-normative-note>, <normative-example>, <normative-note>, <notes>, <p>, <ref-list>, <sec>, <styled-content>, <supplementary-material>, <table-wrap>, <tbx:crossReference>, <tbx:definition>, <tbx:entailedTerm>, <tbx:example>, <tbx:externalCrossReference>, <tbx:note>, <tbx:pronunciation>, <tbx:see>, <tbx:source>, <tbx:term>, <tbx:usageNote>, <term-display>, <term-sec>
Description
The following, in order:
Content Model
<!ELEMENT  chem-struct-wrap
                        %chem-struct-wrap-model;                     >
Expanded Content Model

((editing-instruction)*, (object-id)*, label?, (caption)?, (legend)*, (kwd-group)*, (subj-group)*, (alt-text | long-desc | email | ext-link | uri)*, (alternatives | chem-struct | code | graphic | media | preformat | textual-form | non-normative-note | normative-note | non-normative-example | normative-example | notes-group)+, (attrib | permissions)*)

Tagged Sample

With <caption> and alternative structures 

...
<chem-struct-wrap>
 <caption>
  <title>Acesulfame K<break/>
   6-Methyl-1,2,3-oxathiazine-4(3H)-one-2,2 
   Dioxide Potassium Salt</title>
  <p>...</p>
 </caption>
 <alternatives>
  <graphic xmlns:xlink="http://www.w3.org/1999/xlink"
    xlink:href="mul1235456"/>
  <chem-struct>C<sub>4</sub>H<sub>4</sub>KNO<sub>4</sub>S</chem-struct>
  ...
 </alternatives>
</chem-struct-wrap>
...
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